LASORS is now obsolete and no longer available to download - having been replaced by CAP804. However, it contains the same wording.
Mind you, that's the UK CAA interpretation......
8 Synthetic Training Device (STD)
8.1 Particulars of any training session, test or examination undertaken whilst in an STD shall be recorded in the log, including, for each flight simulator, BITD or FNPT session:
a) the date of the session, test or examination (dd/mm/yy);
b) type and qualification number of training device;
c) synthetic training device instruction;
d) the capacity in which the holder acted;
e) the nature of the session, test or examination;
f) total time of session;
g) accumulated total time.
8.2 STD time is creditable towards courses and licence issue but is not flight time and must not be recorded as such. STD time must be logged separately from flight time recorded in the log.